ASCP certification Reference Ranges
SOLVED 2026/2027 WITH
ANSWERS
Bilirubin, total - âœâ€Ã¢Å“â€0.2 - 1 mg/dL
Increased: liver disease, hemolysis
> 20 mg.dL associated with brain damage
Conjugated bilirubin (direct) - âœâ€Ã¢Å“â€< 0.2 mg/dL
Increased: liver disease, obstructive jaundice
Unconjugated bilirubin (indirect) - âœâ€Ã¢Å“â€< 0.8 mg/dL
Increased: prehepatic, posthepatic
BUN - âœâ€Ã¢Å“â€6 - 20 mg/dL
Increase: Kidney disease
Decrease: ovehydration, liver disease
Calcium, total - âœâ€Ã¢Å“â€8.6 - 10 mg/dL
Ionized: 4.6 - 5.08 mg/dL
Increased: primary hyperparathyroidism, cancer, multiple myeloma
Decreased: hypoparathyroidism, malabsorption, vitamin D deficiency, renal tubular acidosis
Chloride - âœâ€Ã¢Å“â€98 - 107 mEq/L
Increase: same as N
Decrease: vomiting, diabetic ketoacidosis, aldosterone deficiency, salt losing renal disease,
metabolic alkalosis, compensated respiratory acidosis